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Plastics

Auxiliary Process Equipment

Auxiliary Process Equipment Article

polymer that was critical to the war effort was "synthetic rubber", which was produced in a variety of forms. Synthetic rubbers are not plastics. Synthetic rubbers are elastic materials.

The first synthetic rubber polymer was obtained by Lebedev in 1910. Practical synthetic rubber grew out of studies published in 1930 written independently by American Wallace Carothers, Russian scientist Lebedev and the German scientist Hermann Staudinger. These studies led in 1931 to one of the first successful synthetic rubbers, known as "neoprene", which was developed at DuPont under the direction of E.K. Bolton. Neoprene is highly resistant to heat and chemicals such as oil and gasoline, and is used in fuel hoses and as an insulating material in machinery.

In 1935, German chemists synthesized the first of a series of synthetic rubbers known as "Buna rubbers". These were "copolymers", meaning that their polymers were made up from not one but two monomers, in alternating sequence. One such Buna rubber, known as "GR-S" (Government Rubber Styrene), is a copolymer of butadiene and styrene, became the basis for U.S. synthetic rubber production during World War II.

Worldwide natural rubber supplies were limited and by mid-1942 most of the rubber-producing regions were under Japanese control. Military trucks needed rubber for tires, and rubber was used in almost every other war machine. The U.S. government launched a major (and largely secret) effort to develop and refine synthetic rubber. A principal scientist involved with the effort was Edward Robbins.

By 1944 a total of 50 factories were manufacturing it, pouring out a volume of the material twice that of the world's natural rubber production before the beginning of the war.

After the war, natural rubber plantations no longer had a stranglehold on rubber supplies, particularly after chemists learned to synthesize isoprene. GR-S remains the primary synthetic rubber for the manufacture of tires.

Synthetic rubber would also play an important part in the space race and nuclear arms race. Solid rockets used during World War II used nitrocellulose explosives for propellants, but it was impractical and dangerous to make such rockets very big.

Auxiliary Process Equipment Items

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Conair Wortex Plastic Granulator GREAT SIZE

$1900.00
Dukane Ultrasonic Welder Multiplexor

$49.99
ConAir TrueBlend Mixing Hoppers, W/ Gravimetric Readout

$3500.00
DUKANE ULTRASONIC WELDER 4035 CONTROLLER DPCII

$650.00
4" STEEL CASTERS FOR EXTRUSION DOWNSTREAM EQUIPMENT

$30.00
Dynisco Temperature Control 20 Station Hot Runner AIM15

$2000.00
Branson 902J ultrasonic converter

$300.00
Used Prodex Extruder-10 Hp Variable Speed Belt Drive

$2499.00
UNA-DYN UDC-55 Dryer with 200 lb Drying Hopper Unidyn

$1600.00
HERRMAN ULTRASONIC DIALOG WELDER 2012 WITH CONTROL

$249.00
Nelmor Granulators

$129.00
BRANSON Dual 920M SONIC WELDER PRESS with Allen Bradley

$2400.00
Plastics Granulator, Grinder

$300.00
Sterlco Temperature Control Unit Package Plastics TCU

$1200.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
Titanium 20 Khtz Ultrasonic welding horn Dukane 1.5 OD

$39.99
Moeller Devicon Ultrasonic Welder - Sealer - Packaging

$7200.00
TAKE OFF BOX FOR MATERIAL HOPPER, ETC.

$30.00
20 HP Granulator W/ Gaylord Boxing Enclosures, 11"x18"

$2800.00
1-1/2"HOPPER FEED AUGER SCREW/EXTRUDER/MIXER FUEL/STOVE

$24.99
Color Touch Screen Man Machine Interface MMI Dukane

$99.99
3 Boxes Seelye Thermoplastic Welding Rod 1/8" x 36"

$9.99
9 Zone Digital Control King Hot Runner Controller 20a

$300.00
Branson 922RA ultrasonic converter

$500.00
NOVATEC MPC-500 Dryer with 2000 lb Insulated Hopper

$3200.00
Herrmann PS Ultrasonic Welder w/Modules, Booster & Horn

$1200.00
VERY NICE BRY-AIR SYSTEMS DESICCANT DRYER MODEL RM-200

$2990.00
Mecasonic Ultrasonic Rotation Welder Omega II

$2500.00
CONAIR CD-30 DRYER - AFTER COOLER - FOR HIGH HEAT DRYER

$30.00
20 Khtz Ultrasonic welding transducer Dukane

$49.99
AEC Chiller

$425.00
Dryer for Plastic Injection Molding (double unit)

$1175.00
BALL & JEWEL 8x12 5 H.P. GRANULATOR M/N: CG-812-SOSX

$1995.00
Central ELECTROFUSION Clamps Pipe Fusion 1/2" + 1" CTS

$50.00
LARGE WHITLOCK DESICCANT DRYER AND HOPPER

$990.00
ConAir TrueBlend 3 Position Mixer & Hopper, Controls

$5600.00
2007 UNA-DYN 200 CFM DEHUMIDIFYING GAS HOPPER DRYER

$12000.00
Branson Ultrasonic Welder Series 900 MDL 910 IW

$1799.98
NEW McElroy No.28 Pipe Fusion Machine Welder HDPE PE

$12900.00
AUTOHOPPER vacuum loader

$1195.00
ConAir DuraLoad Dual Blender & Hopper, Universal Cntrls

$3000.00
Thermoplastic Hopper Loader Mann+Hummel

$40.00
American MSI APEX-12 12 Zone Hot Runner Controller

$1250.00
PICK AND PLACE ASSEMBLY ROBOT FANUC, MELSEC, MITSUBISHI

$2999.00
Dukane 410 ultrasonic welder and accessories

$950.00
New Novatec polymer MPC-50 dryer, insulated hopper

$3000.00
Pick and Place Robot, Ranger Automation

$9500.00
Branson J931 cable

$40.00
Nelmor grinder 20 HP motor 3 blade rotor

$4500.00
Aluminium green ultrasonic booster

$40.00
Kona Temperature Control 16 Station Hot Runner MF24

$1600.00
Conair Thermolator Temptrack Plus, Heat Transfer Tempro

$1200.00
Pick and Place Robot, Ranger Automation, Linear Robot

$9500.00
(3) Vacuum loaders , una-dyn protec mann hummel 7.5 hp

$5650.00
Daikin chiller PCB AKZ306 DHA00794F

$380.00
NEW McElroy No.14 Pipe Fusion Machine Welder HDPE PE

$2799.00
SYNTHETIC WELDER WELDING KIT NYLON PLASTIC PVC ABS ATV

$54.49
Titanium 20 Khtz Ultrasonic welding 2.5 booster Dukane

$150.00
Branson Ultrasonic Welder Series 900 MDL 901AES

$1299.98
Dryer for Plastic Injection Molding (Quad-Unit)

$1650.00
Dukane Transducer

$0.99
PETS P.E.T.S Hot Runner Temperature Controller 851-4

$25.00
LOT OF 2 CONAIR CH16-4 Hopper Vacuum Loader

$999.99
PLASTIC PROCESS EQUIPMENT P161 DRYER

$1000.00
CINCINNATI MILACRON SCREW MOTOR VISTA 440 550 TON

$2500.00
Dupont ELECTROFUSION Clamp 2" Pipe Fusion PE HDPE NR!

$25.00
Pick and Place Robot Engel ERC 83/1-C Servo Linear 2002

$5000.00
StopCock Two Way Shut Off Valve Valves with Hose Barbs

$17.00
Thermolator Used Plastic Injection Mold Heater

$80.00
3 ROLL STACK

$4000.00
ADVANTAGE WATER MOLD TEMP CONTROLLER 48 KW * 460 VOLT

$250.00
Dryer for Plastic Injection Molding (single unit)

$825.00
Nelmor Granulators

$199.00
Conair DL 25 Dryer/Hopper

$600.00
Airless Plastic Welder by Urethane Supply USC 5600HT

$154.95
DRYING HOPPER -- INSULATED-- EST. 300# - GOOD CONDITION

$49.00
Titanium 20 Khtz Ultrasonic welding horn Dukane anodize

$31.30
Central ELECTROFUSION Multi Clamp Pipe Fusion McElroy

$200.00
5 HP Ball & Jewell AUGER Granulator GRINDER with Blower

$850.00
Dryer for Plastic Injection Molding (Quad-Unit)

$1650.00
Pick and Place Robot, Ranger Automation, Linear Robot

$9500.00
New SPEEDRYER 50 lb/hr thermodynamic hopper dryer

$6195.00
3 HP Foremost HD-1 Plastic Granulator Shredder

$800.00
used Branson Mod. 8400 Ultrasonic Welder

$2750.00
250 lbs Portable Material Mixers (10 available)

$500.00
Aluminium Ultrasonic blue booster

$40.00
Control King Hot Runner Control Card Model 2010 20 Amp

$25.00
Conair Franklin 3 component blender plastics equipment

$2500.00
Willman/Nucon Vacuum Filters, Valves and Controls Incl.

$700.00
VERY NICE CONAIR COMPU-DRY DRYER W/ NOVATECH NPH-HOPPER

$2990.00
BRY-AIR NOVATECH DRYING HOPPER W/ VACUUM LOADER H-4-I-S

$990.00
Granulator , Ball & Jewell , HAF68 , 3hp , plastics

$1650.00
(2) Branson Display Key Board for Ultrasonic Welder NEW

$99.99
Christie / Connectra Miter Insert Sets Pipe Fusion HDPE

$1500.00
Mcelroy No 14 Pitbull Pipe Fusion Welding System VGC

$1799.00
NELMOR GRANULATOR INJECTION MOLDING 10 HP 12X10

$1700.00
Sterlco M2B temperature control station

$240.00
RANGER SPR-70 REMOVAL ROBOT MODEL SPR-70

$51.00
McElroy No.2CU Pipe Fusion Welder Machine Tool Plastic

$800.00
URETHANE SUPPLY 5600HT MINI-WELD AIRLESS PLASTIC WELDER

$83.00